Golang Excelize：如何使用行号和列号设置单元格值

I am trying to write a function that writes a string array to excel in Go, using Excelize. My question: how to address a cell with row number and col number, instead of the "A1" type of syntax for the "axis" parameter ?

// Writes the header of the file:  
xlfile.SetCellValue("Sheet1", "A1", "1")

// Instead of "A1", I would like to use row number and col number as parameters